Methodology

The American Community Survey (ACS) is a national survey that uses continuous measurement methods. In this survey, a series of monthly samples produce annual estimates for the same small areas (census tracts and block groups) formerly surveyed via the decennial census long-form sample.

Through the 2014 Design and Methodology Report, and supplemental pages, the Census Bureau provides detailed information about the methods used to collect and produce ACS estimates, including information about the following: